Hanging lamp



(no Model.) 2 Sheets-Sheet 1.

, A. TAPLIN.

HANGING LAMP. .No. 363,698. Patented May 24, 1887.

N. PEYERS, Phuco-Lisho n her. \Vashinglon. D. C.

(No Model.) 2 Sheets-Sheet 2. A. TAPLIN.

HANGING LAMP. No. 363,698. Patented May 24. 1887.

UNITED STATES PATENT OFFICE.

ALVIN TAPLIN, OF FORESTVILLE, ASSIGNOR TO THE BRISTOL BRASS AND CLOCK COMPANY, OF BRISTOL, CONNECTICUT. I

HANGING LAMP.

SPECIFICATION forming part of Letters Patent No. 363,698, dated May 24, 1887.

Application filed September 2, 1886. Serial No. 21 29173. (No model.)

To all whom, it may concern.-

Be it known that I, ALVIN TAPLIN, a citizen of the United States, residing at Forestville, in the county of Hartford and State of Connecticut, have invented certain new and use ful Improvements in Hanging Lamps,of which the following is a specification.

My invention relates to improvements in hanging lamps of the class having spring-pulleys and chains for holding the lamp at different elevations; and the object of my improvement is to produce a simple arrangement of the pulleys and chains whereby the lamp may be constructed at less cost than heretofore without impairing its efficiency.

In the accompanying drawings, Figure 1 is a side elevation of a lamp suspended by means of chains and springpulleys constructed in accordance with my invention. Fig. 2 is a side elevation of the springpulleys, the chains, the frame for the spring'pulley's, and a see tional view of the sheet-metal base upon which they are mounted. Fig. 3 is a side elevation of the same with a portion of the base broken away and with the frictionpulleys over which the chains pass shown in section. Fig. 4 is a vertical section of the same on line at x of Fig. 2, looking to the right; and Fig. 5 is a central vertical section, partly in elevation, of the pulley-shaft, chain pulleys, the springs, and their frame.

I form a sheet-metal base or support, A, which is of substantially the ordinary con struction andprovided with friction pulleys a, over which the suspension chains run. These friction-pulleys are so formed as to offer some resistance to the passage of the chains, but so that they will revolveand let the chains run over them after a certain amount of pressure or pulling strain is exerted upon said chains. Iprefer to construct these frictionpulleys with a rubber body and metal flanges, substantially in accordance with my Patent No. 335,654, dated February 9, 1886.

I mount the spring-pulleys B 13 upon the shaft b and within the frame C, which frame is secured to the base A by screws or rivets, as shown most clearly in Fig. 2. These pulleys have a groove at their edge, within which 50 the chain is received as it is wound upon them.

The shaft 1) takes its bearings in the bottom of open slots at the top of the frame C. Between the pulleys at the middle portion of the frame 0 is the spring box or housing I), the upper end of which, for convenience of 5 hanging the lamp, is formed with an eye, 0, as shown. The pulleyshaft may be acted upon in a direction to wind up the chains by means of a single spring of the proper strength; but I prefer to divide this spring force and use two coiled springs of less width placed side by side, one of which springs, E, is shown in Fig. 4, while both are shown in Fig. 5. One end of each spring I secure to the spring box or housing D, while the other end is secured to the shaft b, said ends being secured directly in the ordinary manner of securing the ends of like springs in other articles. The pulleys B B are both rigidly secured to the shaft b, so as to rotate with it. The spring box or housing D is made separate from the frame C, and secured thereon by means of a screw, f, Figs. 4 and 5, so that the shaft 1), the springs E, the pulleys B B, and said spring-box maybe first assembled and afterward attached to the frame 7 5 by lowering the shaft directly downward into the open bearings in the frame C and then socuring said springbox to said frame by means of the screwf. The chains F F have one of their ends secured to the lamp,while their opposite ends are secured to the respective pulleys B, said chains being wound in such a direction around saidpulleys that pulling them downward will wind up the springs. One of the chains (the left-hand one in Fig. 3) leaves the periphery of the .pulley near the bottom,

and then passes to the left over one of the friction-pulleys a and then downward, forming substantially a right angle where it runs over said pulley. The other chain leaves the pcriphery of the pulley at about the middle of its height at one side and then passes outwardly a little and over the other frictionpulley, as shown at the right-hand side of Fig. 3. This arrangement of the chains over drums and guide-pulleys is not of itself claimed as my invention. Each of the chains has an enlargement or stop, 9, secured thereto and acting against the under side of the base A, to limit the amount of chain that may be wound around the pulleys. This stop may be of any desirable form; but I prefer to make it in the form of a disk with a hole near each edge for the reception of the connecting chain links, as shown.

Herctofore, so far as I know, when springpulleys have been used in connection with chains for raising and lowering lamps and without any ratchet or brake or without a train of gearing between the spring and the pulley-shaft, the pulleys have been fixed in a horizontal position in order to obtain the necessary friction to make the pulleys stand still when the lamp is set at different elevations. I have discovered that with the use of pulleys having an elastic periphery the spring-pulleys, with a shaft connected directly with the spring, may be arranged vertically with the chains arranged as shown, and the device operate efficiently for hanging the lamp and holding it at different heights, whereby I dispense with the complicated mechanism of prior hanging-lamp patents for holding the chains from unwinding.

I claim as myinvention- 1. In a hanging 1a n1p,'the combination of the frame G, having open bearings, the shaft b,the chain-pulleys B B, mounted on said shaft, the spring-box D, formed separately from the frame 0, but adapted to be secured thereon, and located between said pulleys, and a spring or springs, all substantially as described, and for the purpose specified.

2. In a hanging lamp, the combination of a shaft-frame, a horizontal shaft, the chain-pulleys and chains secured thereto, the springs connected directly to said shaft, the base A, upon which said parts are mounted, and pulleys a a, having elastic peripheries over which the chains run, substantially as described, and for the purpose specified.

ALVIN TA PLIN.

Vi tn esses:

SAMUEL P. NEWELL, WILLIAM H. TAPLIN, 

